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authorPavel Kotucek <pkotucek@cisco.com>2017-06-20 14:00:26 +0200
committerJohn Lo <loj@cisco.com>2017-08-01 14:44:13 +0000
commit15ac81c16fba83033090299413a3a2dbb848a0f9 (patch)
treeca9617e0faa21847be31e47c0c65ffc0cacf47eb /src/vnet
parent5b311202b82a827c712d2cb7604c56049266adc9 (diff)
P2P Ethernet
Change-Id: Idb97e573961b3bc2acdeef77582314590795f8c3 Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
Diffstat (limited to 'src/vnet')
-rw-r--r--src/vnet/api_errno.h3
-rw-r--r--src/vnet/devices/devices.c6
-rw-r--r--src/vnet/ethernet/ethernet.h1
-rw-r--r--src/vnet/ethernet/interface.c54
-rwxr-xr-xsrc/vnet/ethernet/node.c17
-rw-r--r--src/vnet/ethernet/p2p_ethernet.api1
-rw-r--r--src/vnet/ethernet/p2p_ethernet.c165
-rw-r--r--src/vnet/ethernet/p2p_ethernet.h42
-rw-r--r--src/vnet/ethernet/p2p_ethernet_api.c17
-rw-r--r--src/vnet/ethernet/p2p_ethernet_input.c247
-rw-r--r--src/vnet/interface.c4
-rw-r--r--src/vnet/interface.h15
-rw-r--r--src/vnet/interface_funcs.h3
13 files changed, 546 insertions, 29 deletions
diff --git a/src/vnet/api_errno.h b/src/vnet/api_errno.h
index b22bb3a879f..747c65e7fb5 100644
--- a/src/vnet/api_errno.h
+++ b/src/vnet/api_errno.h
@@ -112,7 +112,8 @@ _(BD_ALREADY_EXISTS, -119, "Bridge domain already exists") \
_(BD_IN_USE, -120, "Bridge domain has member interfaces") \
_(BD_NOT_MODIFIABLE, -121, "Bridge domain 0 can't be deleted/modified") \
_(BD_ID_EXCEED_MAX, -122, "Bridge domain ID exceed 16M limit") \
-_(UNSUPPORTED, -123, "Unsupported")
+_(UNSUPPORTED, -123, "Unsupported") \
+_(SUBIF_DOESNT_EXIST, -124, "Subinterface doesn't exist")
typedef enum
{
diff --git a/src/vnet/devices/devices.c b/src/vnet/devices/devices.c
index f64c6e0dea5..2eb8e30e076 100644
--- a/src/vnet/devices/devices.c
+++ b/src/vnet/devices/devices.c
@@ -77,6 +77,12 @@ VNET_FEATURE_INIT (span_input, static) = {
.runs_before = VNET_FEATURES ("ethernet-input"),
};
+VNET_FEATURE_INIT (p2p_ethernet_node, static) = {
+ .arc_name = "device-input",
+ .node_name = "p2p-ethernet-input",
+ .runs_before = VNET_FEATURES ("ethernet-input"),
+};
+
VNET_FEATURE_INIT (ethernet_input, static) = {
.arc_name = "device-input",
.node_name = "ethernet-input",
diff --git a/src/vnet/ethernet/ethernet.h b/src/vnet/ethernet/ethernet.h
index d9ab8c10508..9ca256c94ce 100644
--- a/src/vnet/ethernet/ethernet.h
+++ b/src/vnet/ethernet/ethernet.h
@@ -169,6 +169,7 @@ typedef struct
#define SUBINT_CONFIG_MATCH_3_TAG (1<<3)
#define SUBINT_CONFIG_VALID (1<<4)
#define SUBINT_CONFIG_L2 (1<<5)
+#define SUBINT_CONFIG_P2P (1<<6)
} subint_config_t;
diff --git a/src/vnet/ethernet/interface.c b/src/vnet/ethernet/interface.c
index 9ac30bc6652..3e78a49d62b 100644
--- a/src/vnet/ethernet/interface.c
+++ b/src/vnet/ethernet/interface.c
@@ -89,7 +89,10 @@ ethernet_build_rewrite (vnet_main_t * vnm,
ethernet_type_t type;
uword n_bytes = sizeof (h[0]);
u8 *rewrite = NULL;
+ u8 is_p2p = 0;
+ if (sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P)
+ is_p2p = 1;
if (sub_sw != sup_sw)
{
if (sub_sw->sub.eth.flags.one_tag)
@@ -100,13 +103,24 @@ ethernet_build_rewrite (vnet_main_t * vnm,
{
n_bytes += 2 * (sizeof (ethernet_vlan_header_t));
}
- // Check for encaps that are not supported for L3 interfaces
- if (!(sub_sw->sub.eth.flags.exact_match) ||
- (sub_sw->sub.eth.flags.default_sub) ||
- (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
- (sub_sw->sub.eth.flags.inner_vlan_id_any))
+ else if (PREDICT_FALSE (is_p2p))
{
- return 0;
+ n_bytes = sizeof (ethernet_header_t);
+ }
+ if (PREDICT_FALSE (!is_p2p))
+ {
+ // Check for encaps that are not supported for L3 interfaces
+ if (!(sub_sw->sub.eth.flags.exact_match) ||
+ (sub_sw->sub.eth.flags.default_sub) ||
+ (sub_sw->sub.eth.flags.outer_vlan_id_any) ||
+ (sub_sw->sub.eth.flags.inner_vlan_id_any))
+ {
+ return 0;
+ }
+ }
+ else
+ {
+ n_bytes = sizeof (ethernet_header_t);
}
}
@@ -126,12 +140,20 @@ ethernet_build_rewrite (vnet_main_t * vnm,
h = (ethernet_header_t *) rewrite;
ei = pool_elt_at_index (em->interfaces, hw->hw_instance);
clib_memcpy (h->src_address, ei->address, sizeof (h->src_address));
- if (dst_address)
- clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
+ if (is_p2p)
+ {
+ clib_memcpy (h->dst_address, sub_sw->p2p.client_mac,
+ sizeof (h->dst_address));
+ }
else
- memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
+ {
+ if (dst_address)
+ clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
+ else
+ memset (h->dst_address, ~0, sizeof (h->dst_address)); /* broadcast */
+ }
- if (sub_sw->sub.eth.flags.one_tag)
+ if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
{
ethernet_vlan_header_t *outer = (void *) (h + 1);
@@ -143,7 +165,7 @@ ethernet_build_rewrite (vnet_main_t * vnm,
outer->type = clib_host_to_net_u16 (type);
}
- else if (sub_sw->sub.eth.flags.two_tags)
+ else if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.two_tags)
{
ethernet_vlan_header_t *outer = (void *) (h + 1);
ethernet_vlan_header_t *inner = (void *) (outer + 1);
@@ -174,7 +196,12 @@ ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
adj = adj_get (ai);
- if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
+ vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
+ if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
+ {
+ default_update_adjacency (vnm, sw_if_index, ai);
+ }
+ else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
{
arp_update_adjacency (vnm, sw_if_index, ai);
}
@@ -719,7 +746,8 @@ vnet_delete_sub_interface (u32 sw_if_index)
vnet_interface_main_t *im = &vnm->interface_main;
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
- if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
+ if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
+ si->type == VNET_SW_INTERFACE_TYPE_P2P)
{
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
u64 sup_and_sub_key =
diff --git a/src/vnet/ethernet/node.c b/src/vnet/ethernet/node.c
index 421d501adda..f216216d3d7 100755
--- a/src/vnet/ethernet/node.c
+++ b/src/vnet/ethernet/node.c
@@ -40,6 +40,7 @@
#include <vlib/vlib.h>
#include <vnet/pg/pg.h>
#include <vnet/ethernet/ethernet.h>
+#include <vnet/ethernet/p2p_ethernet.h>
#include <vppinfra/sparse_vec.h>
#include <vnet/l2/l2_bvi.h>
@@ -823,7 +824,21 @@ ethernet_sw_interface_get_config (vnet_main_t * vnm,
// Locate the subint for the given ethernet config
si = vnet_get_sw_interface (vnm, sw_if_index);
- if (si->sub.eth.flags.default_sub)
+ if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
+ {
+ p2p_ethernet_main_t *p2pm = &p2p_main;
+ u32 p2pe_sw_if_index =
+ p2p_ethernet_lookup (hi->hw_if_index, si->p2p.client_mac);
+ if (p2pe_sw_if_index == ~0)
+ {
+ pool_get (p2pm->p2p_subif_pool, subint);
+ si->p2p.pool_index = subint - p2pm->p2p_subif_pool;
+ }
+ else
+ subint = vec_elt_at_index (p2pm->p2p_subif_pool, si->p2p.pool_index);
+ *flags = SUBINT_CONFIG_P2P;
+ }
+ else if (si->sub.eth.flags.default_sub)
{
subint = &main_intf->default_subint;
*flags = SUBINT_CONFIG_MATCH_0_TAG |
diff --git a/src/vnet/ethernet/p2p_ethernet.api b/src/vnet/ethernet/p2p_ethernet.api
index 72a734237d5..8fb66376522 100644
--- a/src/vnet/ethernet/p2p_ethernet.api
+++ b/src/vnet/ethernet/p2p_ethernet.api
@@ -18,6 +18,7 @@ define p2p_ethernet_add
u32 client_index;
u32 context;
u32 parent_if_index;
+ u32 subif_id;
u8 remote_mac[6];
};
diff --git a/src/vnet/ethernet/p2p_ethernet.c b/src/vnet/ethernet/p2p_ethernet.c
index 3c077318b7b..e3f667b5ffe 100644
--- a/src/vnet/ethernet/p2p_ethernet.c
+++ b/src/vnet/ethernet/p2p_ethernet.c
@@ -18,12 +18,152 @@
#include <vppinfra/bihash_16_8.h>
#include <vnet/vnet.h>
#include <vnet/ethernet/p2p_ethernet.h>
+#include <vnet/l2/l2_input.h>
+
+p2p_ethernet_main_t p2p_main;
+
+static void
+create_p2pe_key (p2p_key_t * p2pe_key, u32 parent_if_index, u8 * client_mac)
+{
+ clib_memcpy (p2pe_key->mac, client_mac, 6);
+ p2pe_key->pad1 = 0;
+ p2pe_key->hw_if_index = parent_if_index;
+ p2pe_key->pad2 = 0;
+}
+
+u32
+p2p_ethernet_lookup (u32 parent_if_index, u8 * client_mac)
+{
+ p2p_ethernet_main_t *p2pm = &p2p_main;
+ p2p_key_t p2pe_key;
+ uword *p;
+
+ create_p2pe_key (&p2pe_key, parent_if_index, client_mac);
+ p = hash_get_mem (p2pm->p2p_ethernet_by_key, &p2pe_key);
+ if (p)
+ return p[0];
+
+ return ~0;
+}
int
p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index,
- u8 * client_mac, int is_add)
+ u8 * client_mac, u32 p2pe_subif_id, int is_add,
+ u32 * p2pe_if_index)
{
- return 0;
+ vnet_main_t *vnm = vnet_get_main ();
+ p2p_ethernet_main_t *p2pm = &p2p_main;
+ vnet_interface_main_t *im = &vnm->interface_main;
+
+ u32 p2pe_sw_if_index = ~0;
+ p2pe_sw_if_index = p2p_ethernet_lookup (parent_if_index, client_mac);
+
+ if (p2pe_if_index)
+ *p2pe_if_index = ~0;
+
+ if (is_add)
+ {
+ if (p2pe_sw_if_index == ~0)
+ {
+ vnet_hw_interface_t *hi;
+
+ hi = vnet_get_hw_interface (vnm, parent_if_index);
+ if (hi->bond_info == VNET_HW_INTERFACE_BOND_INFO_SLAVE)
+ return VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED;
+
+ u64 sup_and_sub_key =
+ ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
+ uword *p;
+ p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
+ if (p)
+ {
+ if (CLIB_DEBUG > 0)
+ clib_warning
+ ("p2p ethernet sub-interface on sw_if_index %d with sub id %d already exists\n",
+ hi->sw_if_index, p2pe_subif_id);
+ return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
+ }
+ vnet_sw_interface_t template = {
+ .type = VNET_SW_INTERFACE_TYPE_P2P,
+ .flood_class = VNET_FLOOD_CLASS_NORMAL,
+ .sup_sw_if_index = hi->sw_if_index,
+ .sub.id = p2pe_subif_id
+ };
+
+ clib_memcpy (template.p2p.client_mac, client_mac,
+ sizeof (template.p2p.client_mac));
+
+ if (vnet_create_sw_interface (vnm, &template, &p2pe_sw_if_index))
+ return VNET_API_ERROR_SUBIF_CREATE_FAILED;
+
+ vnet_interface_main_t *im = &vnm->interface_main;
+ sup_and_sub_key =
+ ((u64) (hi->sw_if_index) << 32) | (u64) p2pe_subif_id;
+ u64 *kp = clib_mem_alloc (sizeof (*kp));
+
+ *kp = sup_and_sub_key;
+ hash_set (hi->sub_interface_sw_if_index_by_id, p2pe_subif_id,
+ p2pe_sw_if_index);
+ hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, p2pe_sw_if_index);
+
+ p2p_key_t *p_p2pe_key;
+ p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
+ create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
+ hash_set_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key,
+ p2pe_sw_if_index);
+
+ if (p2pe_if_index)
+ *p2pe_if_index = p2pe_sw_if_index;
+
+ vec_validate (p2pm->p2p_ethernet_by_sw_if_index, parent_if_index);
+ if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 0)
+ {
+ vnet_feature_enable_disable ("device-input",
+ "p2p-ethernet-input",
+ parent_if_index, 1, 0, 0);
+ /* Set promiscuous mode on the l2 interface */
+ ethernet_set_flags (vnm, parent_if_index,
+ ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
+
+ }
+ p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]++;
+ /* set the interface mode */
+ set_int_l2_mode (vm, vnm, MODE_L3, p2pe_subif_id, 0, 0, 0, 0);
+ return 0;
+ }
+ return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
+ }
+ else
+ {
+ if (p2pe_sw_if_index == ~0)
+ return VNET_API_ERROR_SUBIF_DOESNT_EXIST;
+ else
+ {
+ int rv = 0;
+ rv = vnet_delete_sub_interface (p2pe_sw_if_index);
+ if (!rv)
+ {
+ vec_validate (p2pm->p2p_ethernet_by_sw_if_index,
+ parent_if_index);
+ if (p2pm->p2p_ethernet_by_sw_if_index[parent_if_index] == 1)
+ {
+ vnet_feature_enable_disable ("device-input",
+ "p2p-ethernet-input",
+ parent_if_index, 0, 0, 0);
+ /* Disable promiscuous mode on the l2 interface */
+ ethernet_set_flags (vnm, parent_if_index, 0);
+ }
+ p2pm->p2p_ethernet_by_sw_if_index[parent_if_index]--;
+
+ /* Remove p2p_ethernet from hash map */
+ p2p_key_t *p_p2pe_key;
+ p_p2pe_key = clib_mem_alloc (sizeof (*p_p2pe_key));
+ create_p2pe_key (p_p2pe_key, parent_if_index, client_mac);
+ hash_unset_mem (p2pm->p2p_ethernet_by_key, p_p2pe_key);
+ }
+ return rv;
+ }
+ }
}
static clib_error_t *
@@ -35,6 +175,7 @@ vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
int is_add = 1;
int remote_mac = 0;
u32 hw_if_index = ~0;
+ u32 sub_id = ~0;
u8 client_mac[6];
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
@@ -44,6 +185,8 @@ vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
;
else if (unformat (input, "%U", unformat_ethernet_address, &client_mac))
remote_mac = 1;
+ else if (unformat (input, "sub-id %d", &sub_id))
+ ;
else if (unformat (input, "del"))
is_add = 0;
else
@@ -54,9 +197,11 @@ vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
return clib_error_return (0, "Please specify parent interface ...");
if (!remote_mac)
return clib_error_return (0, "Please specify client MAC address ...");
+ if (sub_id == ~0 && is_add)
+ return clib_error_return (0, "Please specify sub-interface id ...");
u32 rv;
- rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, is_add);
+ rv = p2p_ethernet_add_del (vm, hw_if_index, client_mac, sub_id, is_add, 0);
switch (rv)
{
case VNET_API_ERROR_BOND_SLAVE_NOT_ALLOWED:
@@ -77,17 +222,21 @@ vnet_p2p_ethernet_add_del (vlib_main_t * vm, unformat_input_t * input,
return 0;
}
-/* *INDENT-OFF* */
VLIB_CLI_COMMAND (p2p_ethernet_add_del_command, static) =
{
- .path = "p2p_ethernet ",
- .function = vnet_p2p_ethernet_add_del,
- .short_help = "p2p_ethernet <intfc> <mac-address> [del]",};
-/* *INDENT-ON* */
+.path = "p2p_ethernet ",.function = vnet_p2p_ethernet_add_del,.short_help =
+ "p2p_ethernet <intfc> <mac-address> [sub-id <id> | del]",};
static clib_error_t *
p2p_ethernet_init (vlib_main_t * vm)
{
+ p2p_ethernet_main_t *p2pm = &p2p_main;
+
+ p2pm->vlib_main = vm;
+ p2pm->vnet_main = vnet_get_main ();
+ p2pm->p2p_ethernet_by_key =
+ hash_create_mem (0, sizeof (p2p_key_t), sizeof (uword));
+
return 0;
}
diff --git a/src/vnet/ethernet/p2p_ethernet.h b/src/vnet/ethernet/p2p_ethernet.h
index 31b93d829fb..bb1e2896bc2 100644
--- a/src/vnet/ethernet/p2p_ethernet.h
+++ b/src/vnet/ethernet/p2p_ethernet.h
@@ -18,6 +18,46 @@
#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
-int p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index, u8 * client_mac, int is_add);
+
+typedef struct {
+ /**
+ * Hash mapping parent sw_if_index and client mac address to p2p_ethernet sub-interface
+ */
+ uword * p2p_ethernet_by_key;
+
+ u32 *p2p_ethernet_by_sw_if_index;
+
+ // Pool of p2p subifs;
+ subint_config_t *p2p_subif_pool;
+
+ /* convenience */
+ vlib_main_t * vlib_main;
+ vnet_main_t * vnet_main;
+} p2p_ethernet_main_t;
+
+extern p2p_ethernet_main_t p2p_main;
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 p2pe_sw_if_index;
+ u8 client_mac[6];
+} p2p_ethernet_trace_t;
+
+/**
+ * @brief Key struct for P2P Ethernet
+ * Key fields: parent sw_if_index and client mac address
+ * all fields in NET byte order
+ */
+
+typedef struct {
+ u8 mac[6];
+ u16 pad1; // padding for u64 mac address
+ u32 hw_if_index;
+ u32 pad2; // padding for u64
+} p2p_key_t;
+
+u32 p2p_ethernet_lookup (u32 parent_sw_if_index, u8* client_mac);
+int p2p_ethernet_add_del (vlib_main_t * vm, u32 parent_if_index, u8 * client_mac, u32 sub_id, int is_add, u32 *p2pe_if_index);
#endif /* included_vnet_p2p_ethernet_h */
diff --git a/src/vnet/ethernet/p2p_ethernet_api.c b/src/vnet/ethernet/p2p_ethernet_api.c
index 1d9eaeb0286..f2c730b4d25 100644
--- a/src/vnet/ethernet/p2p_ethernet_api.c
+++ b/src/vnet/ethernet/p2p_ethernet_api.c
@@ -51,12 +51,21 @@ vl_api_p2p_ethernet_add_t_handler (vl_api_p2p_ethernet_add_t * mp)
int rv;
u32 parent_if_index = htonl (mp->parent_if_index);
+ u32 sub_id = htonl (mp->subif_id);
+ u32 p2pe_if_index;
u8 remote_mac[6];
clib_memcpy (remote_mac, mp->remote_mac, 6);
- rv = p2p_ethernet_add_del (vm, parent_if_index, remote_mac, 1);
-
- REPLY_MACRO (VL_API_P2P_ETHERNET_ADD_REPLY);
+ rv =
+ p2p_ethernet_add_del (vm, parent_if_index, remote_mac, sub_id, 1,
+ &p2pe_if_index);
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO2(VL_API_P2P_ETHERNET_ADD_REPLY,
+ ({
+ rmp->sw_if_index = htonl(p2pe_if_index);
+ }));
+ /* *INDENT-ON* */
}
void
@@ -70,7 +79,7 @@ vl_api_p2p_ethernet_del_t_handler (vl_api_p2p_ethernet_del_t * mp)
u8 remote_mac[6];
clib_memcpy (remote_mac, mp->remote_mac, 6);
- rv = p2p_ethernet_add_del (vm, parent_if_index, remote_mac, 0);
+ rv = p2p_ethernet_add_del (vm, parent_if_index, remote_mac, ~0, 0, 0);
REPLY_MACRO (VL_API_P2P_ETHERNET_DEL_REPLY);
}
diff --git a/src/vnet/ethernet/p2p_ethernet_input.c b/src/vnet/ethernet/p2p_ethernet_input.c
new file mode 100644
index 00000000000..a58b832af14
--- /dev/null
+++ b/src/vnet/ethernet/p2p_ethernet_input.c
@@ -0,0 +1,247 @@
+/*
+ * node.c: p2p ethernet vpp node
+ *
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vppinfra/error.h>
+
+#include <vnet/ethernet/p2p_ethernet.h>
+
+#include <vppinfra/error.h>
+#include <vppinfra/elog.h>
+
+vlib_node_registration_t p2p_ethernet_input_node;
+
+/* packet trace format function */
+u8 *
+format_p2p_ethernet_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ p2p_ethernet_trace_t *t = va_arg (*args, p2p_ethernet_trace_t *);
+
+ vnet_main_t *vnm = &vnet_main;
+ s = format (s, "P2P ethernet: %U -> %U",
+ format_vnet_sw_if_index_name, vnm, t->sw_if_index,
+ format_vnet_sw_if_index_name, vnm, t->p2pe_sw_if_index);
+
+ return s;
+}
+
+#define foreach_p2p_ethernet_error \
+_(HITS, "P2P ethernet incoming packets processed")
+
+typedef enum
+{
+#define _(sym,str) P2PE_ERROR_##sym,
+ foreach_p2p_ethernet_error
+#undef _
+ P2PE_N_ERROR,
+} p2p_ethernet_error_t;
+
+static char *p2p_ethernet_error_strings[] = {
+#define _(sym,string) string,
+ foreach_p2p_ethernet_error
+#undef _
+};
+
+static uword
+p2p_ethernet_input_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ u32 n_trace = vlib_get_trace_count (vm, node);
+ u32 n_left_from, *from, *to_next;
+ u32 next_index;
+ u32 n_p2p_ethernet_packets = 0;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0 = 0, next1 = 0;
+ u32 sw_if_index0, sw_if_index1;
+ ethernet_header_t *en0, *en1;
+ u32 rx0, rx1;
+
+ bi0 = from[0];
+ bi1 = from[1];
+ to_next[0] = bi0;
+ to_next[1] = bi1;
+ from += 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left_from -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ en0 = vlib_buffer_get_current (b0);
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ en1 = vlib_buffer_get_current (b1);
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+
+ vnet_feature_next (sw_if_index0, &next0, b0);
+ vnet_feature_next (sw_if_index1, &next1, b1);
+
+ rx0 = p2p_ethernet_lookup (sw_if_index0, en0->src_address);
+ rx1 = p2p_ethernet_lookup (sw_if_index1, en1->src_address);
+
+ if (rx0 != ~0)
+ {
+ /* Send pkt to p2p_ethernet RX interface */
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = rx0;
+ n_p2p_ethernet_packets += 1;
+
+ if (PREDICT_FALSE (n_trace > 0))
+ {
+ p2p_ethernet_trace_t *t0;
+ vlib_trace_buffer (vm, node, next_index, b0,
+ 1 /* follow_chain */ );
+ vlib_set_trace_count (vm, node, --n_trace);
+ t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
+ t0->sw_if_index = sw_if_index0;
+ t0->p2pe_sw_if_index = rx0;
+ }
+ }
+ if (rx1 != ~0)
+ {
+ /* Send pkt to p2p_ethernet RX interface */
+ vnet_buffer (b1)->sw_if_index[VLIB_RX] = rx1;
+ n_p2p_ethernet_packets += 1;
+
+ if (PREDICT_FALSE (n_trace > 0))
+ {
+ p2p_ethernet_trace_t *t1;
+ vlib_trace_buffer (vm, node, next_index, b1,
+ 1 /* follow_chain */ );
+ vlib_set_trace_count (vm, node, --n_trace);
+ t1 = vlib_add_trace (vm, node, b1, sizeof (*t1));
+ t1->sw_if_index = sw_if_index1;
+ t1->p2pe_sw_if_index = rx1;
+ }
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi1, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0 = 0;
+ u32 sw_if_index0;
+ ethernet_header_t *en0;
+ u32 rx0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ en0 = vlib_buffer_get_current (b0);
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ vnet_feature_next (sw_if_index0, &next0, b0);
+
+ rx0 = p2p_ethernet_lookup (sw_if_index0, en0->src_address);
+ if (rx0 != ~0)
+ {
+ /* Send pkt to p2p_ethernet RX interface */
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = rx0;
+ n_p2p_ethernet_packets += 1;
+
+ if (PREDICT_FALSE (n_trace > 0))
+ {
+ p2p_ethernet_trace_t *t0;
+ vlib_trace_buffer (vm, node, next_index, b0,
+ 1 /* follow_chain */ );
+ vlib_set_trace_count (vm, node, --n_trace);
+ t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
+ t0->sw_if_index = sw_if_index0;
+ t0->p2pe_sw_if_index = rx0;
+ }
+ }
+ else
+ {
+ if (PREDICT_FALSE (n_trace > 0))
+ {
+ node->flags |= VLIB_NODE_FLAG_TRACE;
+ }
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, p2p_ethernet_input_node.index,
+ P2PE_ERROR_HITS, n_p2p_ethernet_packets);
+ return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (p2p_ethernet_input_node) = {
+ .function = p2p_ethernet_input_node_fn,
+ .name = "p2p-ethernet-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_p2p_ethernet_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(p2p_ethernet_error_strings),
+ .error_strings = p2p_ethernet_error_strings,
+
+ .n_next_nodes = 1,
+
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (p2p_ethernet_input_node,
+ p2p_ethernet_input_node_fn)
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/vnet/interface.c b/src/vnet/interface.c
index dad1f315620..721259a7d04 100644
--- a/src/vnet/interface.c
+++ b/src/vnet/interface.c
@@ -1151,6 +1151,10 @@ vnet_hw_interface_compare (vnet_main_t * vnm,
int
vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
{
+ vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
+ if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
+ return 1;
+
vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
vnet_hw_interface_class_t *hc =
vnet_get_hw_interface_class (vnm, hw->hw_class_index);
diff --git a/src/vnet/interface.h b/src/vnet/interface.h
index fb75ff349b9..5ca489db32d 100644
--- a/src/vnet/interface.h
+++ b/src/vnet/interface.h
@@ -505,6 +505,7 @@ typedef enum
/* A sub-interface. */
VNET_SW_INTERFACE_TYPE_SUB,
+ VNET_SW_INTERFACE_TYPE_P2P,
} vnet_sw_interface_type_t;
typedef struct
@@ -538,6 +539,17 @@ typedef struct
} eth;
} vnet_sub_interface_t;
+typedef struct
+{
+ /*
+ * Subinterface ID. A number 0-N to uniquely identify
+ * this subinterface under the main interface
+ */
+ u32 id;
+ u32 pool_index;
+ u8 client_mac[6];
+} vnet_p2p_sub_interface_t;
+
typedef enum
{
/* Always flood */
@@ -594,6 +606,9 @@ typedef struct
/* VNET_SW_INTERFACE_TYPE_SUB. */
vnet_sub_interface_t sub;
+
+ /* VNET_SW_INTERFACE_TYPE_P2P. */
+ vnet_p2p_sub_interface_t p2p;
};
vnet_flood_class_t flood_class;
diff --git a/src/vnet/interface_funcs.h b/src/vnet/interface_funcs.h
index 26eef9b9d87..142bef57465 100644
--- a/src/vnet/interface_funcs.h
+++ b/src/vnet/interface_funcs.h
@@ -73,7 +73,8 @@ always_inline vnet_sw_interface_t *
vnet_get_sup_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
{
vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
- if (sw->type == VNET_SW_INTERFACE_TYPE_SUB)
+ if (sw->type == VNET_SW_INTERFACE_TYPE_SUB ||
+ sw->type == VNET_SW_INTERFACE_TYPE_P2P)
sw = vnet_get_sw_interface (vnm, sw->sup_sw_if_index);
return sw;
}